Switch.



Patented Nov. 4, I902.

J. J. SMITH.

SWITCH.

(Application filed Apt. 1, 1902.)

(No Modei.)

A..,\ nu nHWnflW I 6 llllllllllllllllllllll Ill i fnw'zflfilj I Jamaal (6572/27/1 UNITED STATES JAMES J. SMITH, OF LATROBE, PENNSYLVANIA.

' ATENT FFICE.

SWITCH.

SPECIFICATION forming part of Letters Patent No. 712,973, dated November 4, 1902.

' Application filed April 1, 1002. Seria1No.100,980. (Nomodelfi T0 at whom it may concern;

Be it known that I, JAMES J. SMITH, a citizen of the United States of America, residing at Latrobe, in the county of Westmoreland and State of Pennsylvania, have invented certain new and useful Improvements inl- Switches, of which the following is a specification, reference being had therein to the ac companying drawings.

This invention relates to certain new and useful improvements in switches, and has for its object the provision of novel means where-. by the frog may be easily tu'r'nedt'o open or" close the switch, 7

The inventionhas for its further object to provide a device of the above-described character that will be extremely simple inconstruction, strong, durable, comparatively inexpensive to manufacture, and highly efficient in its use.

With the above and other objects in view the invention consists in the novel construction, combination, andarrangement of parts, to be hereinafter more fully described, and specifically pointed out in'the'claim.

In describing the invention in detail refer ence is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views, in which- Figure 1 is a top plan view of my improved frog. Fig. 2is avertical sectional viewthereof, taken on the line 2 2 of Fig. 1. Fig. 3 is an enlarged perspective view of the crank-arm andeccentricto operatetheswitch-frog. Fig. 4 is an underneath detail View of the switchfrog.

In the drawings, the reference-numeral 1 represents the base-plate, and 2 represents the rails. The switch-frog 3 is pivotally secured at 4 upon thebase-plate. The said frog has formed in its undervrface a recess 5 and carries at its rear end a lug 6,' saidl ug operating in the recess 7, formed in theraised portion'of arm 10. 7 an operating-rod'll," which leads to the switchbase-plate, which is arranged between the forward ends of the rails 2. A cam or eccentric 8 is secured in the recess 5'and has attached thereto a shaft 9, to which is secured a crank- This crank-arm 10 isconnected to stand and may be operated by any suitable mechanism.

It will be seen that by operating the rod 11 movement will be imparted to the crank-arm 10, which will operate the cam, and the latter in turn will' move the frog inone direc- :tion or the other, either to open or close the switch. It will'further be noted-that the lug 6 operating in-the recess formed in the baseplate will perfectly guide the frogin its movement.

'. The many advantages obtained by the use I claim as new, and desire to secure by Letters Patent, is

The combination of the switch-frog having its under face recessed and-provided at its rear end with a lug, of a plate provided 'ith a raised portion having a recess therein, said frog pivotall y mounted on said plate and having its lug in the recess'of the said raised portion, a shaft journaled in the said plate, a cam secured to the upper end of the said shaft and arranged in the recess of the said frog, a crank-arm and means for operating the said crank-arm, substantially as described.

In testimony whereof I affix my signatur in the presence of two witnesses.

JAMES J; SMITH. 

